package com.boyi.center.controller.impl;

import com.boyi.qrcode.QRCode;
import com.boyi.qrcode.QRCodeFactory;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * 处理登录请求
 */
@RestController
@Api(value = "登录模块接口->api", tags = {"API登录Controller"})
public class LoginController {
	@ApiOperation("登录")
	@PostMapping("login")
	public void login(HttpServletRequest request, HttpServletResponse response) {
		response.setCharacterEncoding("UTF-8");
		String code = request.getParameter("checkCode");
		HttpSession session = request.getSession();
		if (!code.equalsIgnoreCase((String) session.getAttribute("randCheckCode"))) {
			request.setAttribute("errorMsg", "验证码不正确");
		}
	}

	@ApiOperation("获取验证码")
	@GetMapping("pictureCheckCode")
	public void pictureCheckCode(HttpServletRequest request, HttpServletResponse response) throws IOException {

		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");

		// 设置不缓存图片
		response.setHeader("Pragma", "No-cache");
		response.setHeader("Cache-Control", "No-cache");
		response.setDateHeader("Expires", 0);

		// 指定生成的响应图片,一定不能缺少这句话,否则错误.
		response.setContentType("image/jpeg");
		QRCode qrCode = QRCodeFactory.generate(80, 35);
		HttpSession session = request.getSession(true);
		session.setAttribute("randCheckCode", qrCode.getContent());
		ServletOutputStream outputStream = response.getOutputStream();
		ImageIO.write(qrCode.getImage(), "JPEG", response.getOutputStream());// 输出图片
		outputStream.flush();
		outputStream.close();
	}

}
